Why Can't I Search By Username/Unique ID When Adding Participants To An Event?

I am looking to add a participant to an Event, but I can only search by last name, which is difficult as their last name is very common. Is there a way to search by Username/Unique ID when adding participants to an event?

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Number:111667

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Currently, there is no means to search by Username/Unique ID when adding participants to an event. We understand the need for this sort of feature and have created an Idea on our Community page to this effect. Please navigate to https://community.blackbaud.com and log in or create an account. Once logged in, you may navigate to the Idea page below in order to comment and vote on the Idea: